Heating system and hydraulic vacuum-generator.



B. W. McCLYMONT. I

HEATING SYSTEM AND HYDRAULIC VACUUM GENERATOR.-

APPLICATION HLED JULY 24.1916

1,265,928. V v Patented May14, 1918 2 SHEETS- -SHEET I.

B. w. McCLYMONT. HEATING SYSTEM AND HYDRAULIC VACUUM GENERATOR.

APPUCATION FILED JULY 24.1916. 7 I

Patented May 14,1918.

m M 1 m s m BRYCE W. MOCLYMONT, 9F DETROIT, MIIJHIGAN.

HEATING SYSTEM AND HYDRAULIC VAGUUlii-GENEBATDE.

messes.

To all :wkom it may concern: I 1 Be t lmown'that I, Baron W. MoCLY-'MoN'r, a citizen of the United States of America, residing at Detroit,in the county of Wayne and State of Michigan, have in vented certain newand useful Improve ments in Heating Systems and HydraulicVacuum-Generators, of which the following is a specification, referencebeing had therei in to the accompanying drawings. To produce vacuum atpredetermined times in connection with 'a heating system,

- producing vacuum or suction which will positively withdraw air from aheating system,'and it is the installation of a hydraulic vacuumgenerator in connection with a heating system to whichthis inventionrelates.

To meet all requirements, it is necessary that the vacuum system inconnection with a heating. apparatus be manually placed in operation andautomatically controlled after the apparatus has been placed inoperation, and in order that my invention may be fully understood,reference will now he had to the drawing, wherein A Figure l is adiagrammatic view of. a heatingsystem or apparatus provided with ahydraulic vacuum generator in accordance with my invention, and

Fig. 2.- is a longitudinal sectional view of a hydraulic vacuumgenerator provided with a diaphragm control.

In the drawings, 1 denotes a series of radiators or a steam circulatingmedium having valves 2 adapted to be. manually opened and closed. Thevalves are connect ed by branch pipes 3 to a feed pipe 4 incommunication with a suitable source of steam or hot water 5, as a steamor hot water boiler-or a central steam heating system. For the purposesof explaining invention, the source of steam will be hereinaiterreferred to as a. steam boiler, and with all steam generators, there isnecessarily present a water supply as an agent ofthe heating system,which in the present instance is represented by a pipe 6 supplied withwater under ity pressure. The pipe 6 is provided Specification ofLetters Fate'nt.

npylicatlon filed Iuly 2. 1916. Serial No. 110,995.

by, the

Patented Mayihiili.

with a branch 7 and connected thereto is a hydraulic vacuum generatorgenerally designated 8. The drain or discharge pipe 9 and is connectedby a pipe 10 to a main air pipe 11. This main air pipe is connected bybranches 12 to airvalves 13 of the radiators 1 adapted to he closed bysteam.

The diaphragm type of vacuum generator,

includes a shut off valve 14, an ejector 15, an d a diaphragm casing 30which are installed at such a point in the heating system as to easilycontrolled from heated by the system. A

any compartment" i V generator is provided with a The shut off valve 14comprises a conven tlonal valve body havingua horizontal aperturedpartition 16 afi'ort jing a valve seat, and connected to said valve bodyis a bonnet 17 having a stuiiing hdx '18 for a valve stem 19. The valvesteih '19 has the inner end thereof provided with a rotatable valve 20and a cvlindricalportion/21 of said valve extends into a cushion chamber22 in the inner end of the bonnet 17. The wallsof the valve portion 21,are longitudiihilly score-d or grooved, as at 23, wherehya quan-. Way ofwater may enter the chamber22- and.v serve as a cushioning agent, alsothe grooves 23 allow a sufiicient quantity of Water to enter the chamber22, under pressure, wherelever 25 and the short endor arm of said leveris pivotally connected, as at 26,' t0 a link 2''? pivotally mounted, asat 28, upon the body of the shut oii' valve 1.4. The long arm of theoperating lever 27 extends over the diaphragm casing 30* and is formedwith an apertured lug 29, the will hereinafter appear.

The ejector 15 comprises a casing or chainber connected to thei air pipe10 and provided with a jet 80, aiiozz ie 31, and an ogee Water seal 32.The jet-30 has the outer end thereof connected to the *shut ofi' valve14 and the innerend of said jet extends into the nozzle 31, which ismounted in the inner end of the ogee Water seal 32. This ogee water sealhas the outer end thereof connected to the water discharge or drain pipe9 and adjacent the connection is a boss 33 constituting one of thesupports for the diaphragm casing 30 The diaphragm casing 30 ispreferably made of two sections 34 purpose ofwhich pressure of Waterwill close the A and 35, with the section 34 provided with a nipple 36mounted in. theejector body 15 and establishing communication betweenthe vacuum chamber of said ejector and the section 34: of the diaphragmcasing. Between the sections-34 and 35 of the. diaphragm casing means 38connecting the sections 34 and 35, also a fastening means 39, whichbesides connecting the sections 34 and 35 retains said sections inengagement with the ogee water,

seal 32. Connected to the diaphragm 37 is a plunger 40 extending out ofthe casing section 35 and through theapertured lug 29 of the operatinglever 25. The outer end.

, ing there is mounted a flexible diaphragm I 37, said diaphragm beingheld by a fastencoiled compression spring 42having a' pre-p determinedexpansive force holding the diaphragm normally in the position shown inFig. 2. i

.In order that the shut-off valve 14 may be manually opened, theoperating lever 25 has a suitable connection i3 whereby it may beactuated from any compartment served by the heating system.

When the lever 25 is raised and the'valve s ed, Water or other motivefluid is disciia rged'by the jet 30 into the nozzle 31 and pressure isreduced in the ejector casing or ody 15 and a vacuum or suction producedtherein which immediately'draws' air from the pipes 10, 11 and '12,valves 13 and radiators 1, the, exhaust of air allowing steam to vrapidly circulate throughout the heating sys- As the vacue tem and closethe air valves, um increases in theejector, caused by the closing of theair valves 13, the expansive force of the spring 42 is graduallyovercome and the diaphragm 37 is actuated against the action of thespring to shift the plunger menses .40 inwardly, thereby automaticallyclosing the-valve 14, and causing a cessationin the operation of thevacuum generator.

When the diaphragm 3'? is shifted inwardly, the head or nuts 41 movesthe operat inglever 25 of the shut0fl:' valve 14 and imparts sufiicientmovement to the valve 20 whereby the water within the chamber 22,v

under pressure, positively seats the valve 20 and shuts ofi the supplyofwater to the jet 30. The spring42 flexes the diaphragm 37; f

to normal. position and the vacuum generator is in condition for anotheroperation.

What I claim is A hydraulic vacuum generatorcomprising an injectorcasing adapted to receive motive fluid, a sectional diaphragm casingmounted on said injector casing, a nipple connecting the lower sectionof sa d diaphra am casing tosaidi injector casing to have pressurereduced therein by the passage of motive fluid a through said injectorcasing, fastening means I for connecting the sections. of saiddiephragrn easing with one of said fastening" means attaching saiddiaphragm casing to said injector casing, a diaphragm between ing abovesaid diaphra casing, means connected to the top of said diaphragm and extending out of said diaphragm casing adapted to actuate said operatinglever to close said valve when said diaphragm is flexed in a downwarddirection, and means'in said i the sections of said diaphragm casing, avalve connected to said injector'casing and controlling the supply ofmotive fluid there: a to, an operating lever for said valve extend.

diaphragm casing adapted to restoresaid diaphragm and said leveractuating means to,-

normal position. *1 I a In testimony whereof'l afiix my signature in thepresence oftwo witnesses.

BRYCE W, McCLYMONT; Witnesses:

KARL H. BUEEIEfl, Anna M. 130113..

